There are two types of concrete: concrete that is cracked, and concrete that hasn't yet cracked. :-) Yes, the ground can shift in a permanent setup like yours. Just not as quickly. -Ray

I think the reflection pattern and size would be different if it were one of the extension tubes.

Thank you Ray. I have a permanent pier in concrete that has been set up since 2013, so I do not believe it shifts, especially since I have constructed it with steel Rebars in concrete. Shailesh

Hi Shailesh, Provided polar alignment has not shifted, the model will compensate for polar alignment errors in both pointing and tracking. I said "provided" because some people have noticed that

Hi Linwood nice to hear your success >>> if you have an all sky model, should you check the DEC Arc tracking anyway? it's an optional feature, but yes I suggest you check it. It's a "tracking

Bill Long wrote: Definitely best to encounter a problem before paying a load of money to fix it. :) Despite vendor wishes to the contrary. 😊 Of course, it presumes the wisdom to notice

Definitely best to encounter a problem before paying a load of money to fix it. :) I have always assumed the numbers on one side being different than the other were due to orthogonality issues or a

Bill Long wrote: Its a little bit different of a ballgame with SCT's though. I think with an external focuser and the mirror locks engaged you can mitigate the flop issue that can cause problems.

Its a little bit different of a ballgame with SCT's though. I think with an external focuser and the mirror locks engaged you can mitigate the flop issue that can cause problems.

With the encoders and a good model your reliance on guiding will be a lot less. The guider wont have to work as hard to keep the course. I’ve stopped guiding at all with my Mach1 using 50 point

Ok, it's another one of those "surprise, it did what it said it would" posts, but... first really clear night since i got the mount (2 months ago). First real model where I could get the whole

Hi, Based on my limited research, it seems that temperature will have a bigger impact on refraction than barometric pressure - this is because of the magnitude and rapidity of change. Both are

Yes I have noticed this myself. Stacking the images usually reduces the abberations. The direction of tilt shown by CCD inspector is the same as before. I wonder if the new ap mount is now more

Interesting. -- Dean Jacobsen Astrobin Image Gallery - https://www.astrobin.com/users/deanjacobsen/

The individual sub images are more telling of the remaining problem. Stacking the subs seemed to “fix” the remaining elongation more than I expected. I agree with you though, it sure looks

Ray I can get the mount's time from the site tab but then I have to manually set the computer to that time - a bit of a pain to do with any accuracy (but good enough for most purposes). The computer

Hi Not only that, but I have an MGBox V2 and a Sensorpush high accuracy sensor for temperature and there is a three degree difference between them....

Joe, That image is close to perfect. You would never see any funny stars even with a 4 foot wide print. So my next outing will be to tighten everything up. That includes the adapters and the screws

Hi Dale and Sebastien- thank you so much, this is very helpful. I can see how temperature is important for the APCC model, but does anyone have an idea of how important barometric pressure or RH are

Mine was fixed in Houston as well. AndySea on CN had to have his sent back to Japan.